Automatically-threading loom shuttle



Feb. 10, 1931. STQNE 1,791,853

AUTOMATICALLY THREADING LOOM SHUTTLE Filed Nov. 9, 1929 2 Sheets-Sheet l//VVENTOFI.

M 4 B'YWA AT TORNE Y Feb. 10, 1931. M. STONE 1,791,853

- AUTOMATICALLY THREADING LOOM SHUTTLE Filed Nov. 9, 1929 2 Sheets-Sheet2 9 v INl ENTORJ s I I} i I Patented Feb. 10, 1931 UNITED STATES P TMELVIN L. STONE, or PROVID CE, nrronE IsLANn, ASSIGNOR te ants nonrenarrou, or HOPEDALE, MASSACHUSETTS, A conronA'rio'iv or. MAINEAUTOMATIGAILLY-THREADING tooivr SHUTTLE Application filed November Thisinvention relates automatically threading loom shuttles and isvmoreparpasses through the shed.

ticularly directed to the thread tensioning means whereby tension isexerted upon the thread during weaving and as the shuttle It is now theordinary practice to provide automatically threading loom shuttles withthread tensioning means, but in order that the woven cloth shall presentno defects, it is essential that the filling thread in the .shuttleshall be equallytensioned throughout the weaving operation including theincoming filling which is sup-plied to the shuttle during replenishment.Should the incoming filling end not be tensioned in accordance Wltll thetension exertedduring' subsequent weaving t-hecloth will present adefectand oneof the objects of the present invention is to provide anautomatically threading shuttle with thread tensioning members which maybe moved from thread tensioning relation on replenishment of filling andbe returned to their relative thread tensioning positions on completionof replenishment so that as the shuttle passes through the shed the newfillingwill be tensioned to the same degree as it is in subsequentweaving.

Filling replenishment looms are usually provided with a transferrer forsupplying the shuttle with fresh filling and ejecting the fillingcarrieror bobbin previously in the shuttle, and advantage is taken-of this factin connection with the present invention by mounting upon thetransferrer a controller which, when the transferrer performs itsfunction will cause the thread tensioning .members to be moved innon-tensioning relation and on the return or" the transferrer to idleposition, permit the thread tensioning members to move relatively intothread tenisioning position. Thus on replenishment the incoming fillingmay be operatively related to the tensioning members and on completionof replenishment the tensioning inembers will unerringly act upon thethread to .tension it to the same degree that it is ten- .sioned duringsubsequent weaving.

In the tensioning devices heretofore ordinarily employed dependence isplaced upon '9, 1929. Serial No. 405,327.

the swirling action. of the thread as the shuttle is picked to pass thethread into control of the tensioning members, but in ac cordance withthe present invention the in,-

coming filling thread passes into control of the thread tensioningmembers before the shuttle is picked, and as contributing to, this onceoperatively related to the tensioning membersbefore the shuttle is movedfrom the shuttle box.

The invention and novel features thereof will best be made clearfrom'the following description and accompanying drawings of Fig. l is aperspective view of parts at the replenishing side of the loom andshuttle inthe replenishment box present invention; and i v Fig. 2 is across section through the shuttle on the line 22 of Fig. 3; and 1 Fig. 3is a planview of the" delivery end of the shuttle showing features ofthe present invention; and v I Fig. 4 is'a similar view to that of Fig;3 showing the tensioning members .in thread tensioning relation, and pFig. 5 is a longitudinal section. on the line 5 5 of Fig. 4.

The replenishing shuttle box usual construction through whichthe'ejected filling carrier or bobbin may pass during reprovided withthe endthe thread is positively depress'edon re-V plenishment of fillingso that it becomes at 1 maybe of i 1 Q. and associated wlth thereplenishing shuttle box is a transterrer 3 which may be of usualconstruction and op- 7 and frontward of the bobbin chamber the shuttlehas at-hreading block 8 whereby the shuttle becom s automaticallythreaded after replenishment as the shuttle is picked first ing box itwill be completely threaded asin one direction and then in the oppositedirection; The threading block 8 may be of any of the well known usualtypes and is secured in the shuttle by the transversely extending bolt 9which also may be as heretofore employed, the construction being suchthat the'incoming filling a' will pass into the longitudinal threadpassage 10 on the first pick of the shuttle following replenishment .andas the shuttlereturnsto the replenishusual. v V v r a As hereinbeforesuggested it is essential that the incoming filling shall be tensionedon the first pick of the shuttle following replenishment and means areConsequently employed to move the thread tensioning members relativelyout of the thread tensioning position as the transferrer supplies freshfilling to the shuttle and on completion of replenishment the threadedtensioning members take control of the incoming thread and apply thesame tension thereto on the first pick of the shuttle as in subsequentweaving. The tensioning members may be variously contrived in the scopeof'thepresent invention but as herein shown the two tensioning members11 and 12 consist of plate-like elements mounted upon the securing bolt9 through the medium of spring arms 13 and 1a which extend between thewood of the shuttle as at 15 and the outer side walls of the threadingblock as more clearly indicated by dotted lines in Figs. 3 and l. Thespring arms 13 and 14 preferably extend forward of the bolt 9 whichpasses through each'of them and thus *afford extended bearings forthe-front end portions of sucharms;

The tensioning members 11 and 12 have thread engaging elements 16'whiclnin the present instance of the invention, extend upwardlyfrom'the tensioning members and 12 so that when the tensioningmembers'ar'e in thread tensioning position as indicated by Fig/1 thethread engaging elements 16 will cause the thread to take a certaincourse about the upwardly extending thread engaging elements and therebyimpart to the'thread a slip grip friction.

' From the construction thus far described it will be apparentthat thethread tensioning ,members are mounted for yielding movement relativelyinto and out of thread tensioning position, and normally held in suchposition and moved to such position by the spring arms 13 and 14; V

The transferrer 3 has .as usual the arm 1'. extending therefrom forthesupport of a bobbin engaging tip 1nember18 so that onreplenishment-of filling both the'head and tip portions of bobbin aremoved by the transferrer' into the bobbin chamber. I g r In accordancewith the present invention the thread tensioning members are to be movedrelatively from thread tensioning relat-ion on replenishment of fillingand in the present instance of the invention the transferrer hasconnected thereto a controller which travels with the .transferrer onreplenishment of filling to move the tensioning lation to the threadtensioning members that on operative movement of the trans ferrer thecontroller head willengage por-' tions of the thread tensioning membersand move them relatively from thread tensioning position. 7

In order 7 that the controller may have yielding movement in case ofobstruction a spring 25 is interposed between the head 24: of thecontrollerand the bearing 22, as indicat'edinFig. 1 and a pin 26 extendsthrough thebearing22 and a vertical slot 27 formed in the controller tomaintainthe head 2& of

the controller in its proper rotative relation with the threadtensioning members. The upper portion 'of the controller may be threadedas at 28 and its downwardmovement under the impulse of the spring 25 maybe limited by adjusting nuts 29.

As shown the thread tensioning members are provided with portions 30which preferably converge downwar-dly in the path of movement of thehead 24:.of the controller with the result that as thecontroller movesdownwardly with the transferrer it will move the thread tensioningmembers relatively from their thread tensioning relation.

' The head 24 of the controller is preferably formed as a wedge thesides of which also converge downwardly as indicated at 31 Fig. 2, theresult being that as the controller moves downwardly with thetransferrer the movement of the thread tensioning members from theirthread tensioning position is effected with a somewhat more gradualmovement'than would otherwise be the. case.

In filling replenishing looms it is the commonpractice to secure the endof the incom- 'ing filling toa fixed point, sometimes on the hopper ormagazine so that as the fresh supply of filling is transferred to theshuttle'the incoming filling a will extend from the fresh fillingcarrier longitudinally along the thread passage of the shuttle and inmost instances will be located between the nontensioning position of thethread tensioning members on replenishment. It is preferable, however,to insure that the incoming that as the controller moves with thetrans-' ferrer on replenishment of filling iti will straddle or engagethe incoming filling aand by afurther downward movement of thecontroller will positively carry or depress the incoming filling betweenthe tensioning members, so that upon movement of the controller andtransferrer to idle'positi-on and a consequent movement of the-threadtensioning members to thread tensioning position the incoming fillingwill be placed in control of the tensioning members as indicated in Fig.4.

In the-present instance of the invention both of the threadtensioningmembers are mounted for movement horizontally from threadtensioning position to open a passageway between the thread engagingelement 16 for the incomingfilling thread, and to pre vent the incomingfilling thread from'passing downwardly below the thread tensioningmembers, each of said members is provided with thread supporting fingers33 disposed opposite to recesses 34: in the companion thread tensioningmember, and such fingers and recesses are proportioned such that theyprovide a support for the incoming filling thread in allpositions of thethread tensioning members.

The thread engaging elements 16, which as hereinbefore stated projectedupwardly from the tensioning members 11 and 12 in staggered relation,are preferably provided with in-turned end portions 35, with the resultthat once the incoming filling hasbeen positioned for the action of thethread engaging elements, and the tensioning members have been movedinto tensioning relation, all escape of the filling from between thethread engaging elements is avoided.

When the transferrer is actuated to transfer a fresh supply of fillingto the shuttle While the'latter is in the replenishing shuttle box, thecontroller, which 'IHOVQS with the transferrer separates the threadtensioning members for the'reception of the incoming filling between thethread engaging elements, and the thread depressor acts todepress thethread and insure that it shallberelated to the thread tensionin'g-members such that when the controller moves to its idle position withthe transferrer the incoming thread will be subjected to tension as theshuttlel is picked and passes through the shed and such tension willremain the same during subse- I quent weaving.

' What is claimed is; e 1. An automatically threading loom shuttlehaving a bobbin chamber and side delivery movement into and out ofthread'tensioning relation, 'a transferrer for supplyingwthe shuttlewith fresh filling thread, means carried by the transferrer for movingthe ten- 7 sioning members relatively from'threadten- .sioningrelationby downward movement of the transferrer duringreplenishment of fillng,and permitting return of the. tensioning eye, thread tensioning membersmountedrfor members relatively to thread tensioning relation' as" thetransferrer moves to idle position that the" incoining filling maybetensioned as the shuttle-passes through the shed 'on the first pickofthe shuttle following replenishment of filling; I

'2. An automatically threading loom shuttle having a bobbin chamber andside'delivery eye, thread tensioning members mounted for movenientintoand out of thread 'tensioning relation, a transferrer for supplying theshutto the 'tr'ai sferrer for moving thetension'ing members relativelyfrom thread tensioning relation during replenishment of filling, a

thread positionerpfor moving the incoming filling'thread into positionfor the action of tle with fresh filling thread, means connectedthetensioning members,- and permitting rev turn of the tensioningmenbers relatively to thread tensioning relation as the transferrer andsaid connectedmeans move to their idle i may be tension'ed on the firstpick of the shuttle folposition that the incoming-fillinglowing'replenishment of filling.

3. An automatically threading loom shuttle having a bobbin chamber andside delivery eye, thread tensioning members between the bobbin chamberand side delivery eye for applying tension to the thread as the shuttlepasses through the shed, a ti'ansferrer for supplying the shuttle withfresh filling thread, a controller mounted on the trans- -ferrer formoving the tensioning members relatively-from thread tensioning relationby the downward movement of the transferrer that the incoming fillingthread may be laid in operative relation with the tensioning members,and permitting return of the tensioniiig members to tensioning positionas the controller moves separately with the trans ferrer to idleposition that theincoming filling may be tensioned as the shuttle passesthrough the shed on the first pick following replenishment of filling. I

4. An automatically threading loom shuttle having a bobbin chamber; andside delivery eye, threadtensioning members between the applying tensionto the thread as the shuttle passes through the shed,- a transferrer forbobbin chamber and side delivery eye for 1 supplying the: shuttle withfresh filling thread, an. arm extending from the transferrer towards theouter end of the shuttle box, a controller mounted on the arm for movingthe tensioning members relatively from thread tensioning relation as thetransferrer replenishes the filling that the incoming filling thread maybelaid in operative relation with the tensioning members and permittingreturn of the tensioning members to tensioning relation as thecontroller moves upwardly to idle position, and means for engaginganddepressing the incoming fillinginto operative relation with thetensioning members while the tensioning members are in nontensioningrelation.

5. An automatically threading loom shuttle having thread tensioningmembers to apply tension on the thread as the shuttle passes through theshed, a transferrer for supply-' tion with the transferrer that theincomingthread may be engaged by the tensioning members. 7

, 6. An automatically threading loom shuttle having thread tensioningmembers, a transferrer for supplying the shuttle with fresh filling, acontroller mounted on the transferrer for downward movementtherewith tomove the tensioning members from thread tensioning relation as thetransferrer supplies the shuttle with fresh filling, and permittingreturn of the tensioning members to thread tensioning relation as thecontroller moves to idle position and a thread depressor carried by thecontroller for depressing the incoming filling into operative relationwith the tensioning members.

7. An automatically threading loom shuttle having thread tensioningmembers mounted for movement relatively into and out of thread tensioninrelation, a transferrer for supplying the snnttle with fresh filling, acontroller mounted on the transferrer and having a part that entersbetween the tensioning members to separate them as the transferrerreplenishes the filling that the incoming thread may pass between theseparated tensioning members, and permitting the tensioning members tomove into thread tensioning relation as the controller is withdrawn frombetween the tensioning members on completion of replenishment offilling.

8. An automatically threading loom shuttle having thread tensioningmembers mounted for movement relatively into and out of may pass betweenthe separated tensioning members, and permitting return of thetensioning members into thread tensioning relation as the controller iswithdrawn from between the tensioning members on completion ofreplenishment of filling.

An automatically threading loom shuttle having thread tensioning membersmounted for movement into and out of thread tensioning relation, atransferrer, a controller connected for movement with the transferrerand having a wedge portion to, separate the tensioning members asthetransferrer replenishes the filling and provided with a thread depressorto depress the incoming filling thread between the separated tensioningmembers, and permitting return, of the tensionin members into threadtensioning relation as the wedge is withdrawn from be tween thetensioning members.

' 10. An automatically threading loom shuttle having cooperating threadtensioning members relatively movable in. a substantially horizontalplane into and out ofthread tensioning position, a transferrer, a controller mounted on the transfer rer for relatively moving the tensioningmembers into non-tensioning relation as the transferrer replenishes thefilling and having a thread de pressorto push the incoming filling intocooperating relation. with the non-tensioning positioned tensioningmembers, and permitting return of the tensioning members into tensioningposition upon the incoming filling thread when the controller is movedupwardly with the transferrer that the incoming filling may be tensionedas the shuttle passes through the shed on the first pick of the shuttlefollowing replenishment;

11. An automatically threading loom shuttle having thread tensioningmembers provided with thread engaging elements and mounted for relativemovement into and out of thread tensioning position, thread. supportingfingers extending from the tensioning members in overlapping horizontalrelation adapted to support the thread in all relative positions of thetensioning members, a transferrer, a controller connected for clownwardmovement with the transfer-reifor moving the tensioning membersrelatively from thread tensioning relation on replenishment of fillingand. permit the incoming thread to pass into operative relation with thethread engaging elements, and permitting return of the tensioningmembers into thread tensioning position on the incoming thread as thecontroller again moves upwardly to idle position that the incomingthread may be tensioned as the shuttle passes through the shed on thefirst pick of the shuttle following replenishment. I v

12. An automatically threading loom shuttle having thread tensioningmembers mounted for movement into and out of thread-tensioning relation,a transferrer, a controller. connected for movement with the transferrerto effect relative movement ofthe tensioning members .intonon-tensioning position on replenishment of filling and permittingrelative V movement of the tensioning members into thread tensioningrelation on completion of filling replenishment that the incoming fillmgmay be tensioned as the shuttle passes through the sheclon the firstpick following replenishment, and 'an incoming thread depressor forplacing the incoming thread in operative relation with the tensioningmem here when they are in non-tensioning position.

In'testimony whereof I have signed my name to this specification.

MELVIN L. STONE.

